imo, the druid is one of THE strongest mages. She is simply amazing. Use tanglevines, support your plants with an animal or a spider. Use the beastmasters enchantments, ...
Vine snapper is not bad at all. Vine snapper + thornlasher + tanglevines with the vine tree is very hard to counter.
Yes, the necromancer has much more creatures, but that's about the only thing he has. He has almost no attacks, enchantments, conjurations, equipments or incantations. Of course, many necro's use the warlock's enchantments. My point is, I don't think the druid is weak or not supported because there are few plant creatures. Every mage has its own strengths.
edit: previous to academy and paladin vs Siren, the holy school was also very small. 2016 is a good year for them. maybe 2017 will bring more mind spells and plants. (maybe alternate forcemaster vs alternate druid 
)
I know the druid its good, but i believe you dont understand (mabye my fault for my poor english), What i said.
1) Druid is good.
2) Druid have few cards to choose and few vine spells
3) When you have few cards only play the same tactic, another and another time (this is boring and frustrating when you see that arcane wonders make more cards and tactics with anothers mage)
4) When you have only 3 or 4 vine creatures and few cards, your opponent know your tactic and can counter it.
5) nechomancer in the same box had more creatures than druid and he can use dark creatures from basic box.
6) One of you will said, Try another mage, i tried, but i dont feel good playing another mage, because in my young as a roleplayer i choose ever and ever druid as profession, i like the plant power and all this stuff.
7) in any game when a player see that his favourites factions, army, mage, are forgotten for designers and developers, many people leave the game , because they become bored, and change the game for another, now im testing Vs System 2PCG, but i feeling the same as many players, they make a afiliation , and them that afiliation is forgotten.
i remember in a post, that one of them said that they are testing some plants...2 years ago.
9) if you take care of your game, this game can growth very good, and more sales you wil have, but you must attend all kind of players you will have, those that don´t mind playing with every mage, and those that are in love with a mage or two.
10) I believe, its not problem to get in any expansion, one or two cards for one or 2 mages that have less pool and less tactics.
11) in Academy for beastmaster, i saw too many creatures, and people only play the level 1 creatures, because you can summon 2 per turn. you could drop 2 slots of expensive creatures and put plants or something for forcemaster.
12) You have reason, forcemaster have few cards too, one friend that liked this one, dont play anymore for boring, for not to have more cards and tactics.
13) If several peoples feel the same, them its difficult for this game to growth, i´m not in the "embassor program" but i did several demostrations in my town, and when i said all the pros and cons, they don´t like the game, and the question that all of them ask is if all the mages will have new cards and tactics. And when you said how is the game acctually, they said, them it´s the same as warhammer, one army it´s forgotten and others rise more variety and more powerfull.
I like this game, but for now, i haven´t in my town anyone to play, and i put this post, hoping that developers and designers, make a study or something, because if there are more peoples that have my same feelings about the game, they ´ll do something to avoid this, and maybe te game growth another time.
In my country, Devir took this game to translate, and they said 2 years ago, that the game is ready, but for now, no words of date for realesing, .....2 years....
Well, i hope they change something, and i could play again this game.
